The lack of low frequency components in seismic data usually leads full waveform inversion into the local minima of its objective function. An exponential damping of the data, on the other hand, generates artificial low frequencies, which can be used to admit long wavelength updates for waveform inversion. Another feature of exponential damping is that the energy of each trace also exponentially decreases with source-receiver offset, where the leastsquare misfit function does not work well. Thus, we propose a deconvolution-based objective function for waveform inversion with an exponential damping. Since the deconvolution filter includes a division process, it can properly address the unbalanced energy levels of the individual traces of the damped wavefield. Numerical examples demonstrate that our proposed FWI based on the deconvolution filter can generate a convergent long wavelength structure from the artificial low frequency components coming from an exponential damping.

The lack of low frequency components in seismic data usually leads full waveform inversion into the local minima of its objective function. An exponential damping of the data, on the other hand, generates artificial low frequencies, which can be used to admit long wavelength updates for waveform inversion. Another feature of exponential damping is that the energy of each trace also exponentially decreases with source-receiver offset, where the leastsquare misfit function does not work well. Thus, we propose a deconvolution-based objective function for waveform inversion with an exponential damping. Since the deconvolution filter includes a division process, it can properly address the unbalanced energy levels of the individual traces of the damped wavefield. Numerical examples demonstrate that our proposed FWI based on the deconvolution filter can generate a convergent long wavelength structure from the artificial low frequency components coming from an exponential damping.

en

dc.description.sponsorship

We are grateful to King Abdullah University of Science and Technology for financial support.

en

dc.publisher

Society of Exploration Geophysicists

en

dc.relation.url

http://library.seg.org/doi/10.1190/segam2016-13818075.1

en

dc.rights

Archived with thanks to SEG Technical Program Expanded Abstracts 2016

en

dc.title

Waveform inversion with exponential damping using a deconvolution-based objective function

en

dc.type

Conference Paper

en

dc.contributor.department

Physical Sciences and Engineering (PSE) Division

en

dc.contributor.department

Earth Science and Engineering Program

en

dc.identifier.journal

SEG Technical Program Expanded Abstracts 2016

en

dc.conference.date

2011-10-16 to 2011-10-21

en

dc.conference.name

SEG International Exposition and 86th Annual Meeting, SEG 2016

en

dc.conference.location

Dallas, TX, USA

en

dc.eprint.version

Publisher's Version/PDF

en

kaust.author

Choi, Yun Seok

en

kaust.author

Alkhalifah, Tariq Ali

en

All Items in KAUST are protected by copyright, with all rights reserved, unless otherwise indicated.